Field testing of grape maturity

Grape Maturity

Berry sensory analysis (BSA) follows a standardized set of 20 descriptors, assessing the ripeness of wine grapes by judging fruit stems, skin, pulp, and seeds separately (Winter et al., 2004). It uses a four-point scoring system to determine relative ripeness and the change in ripeness over time. As with any maturity analysis, this system is most advantageously used in conjunction with other as...

Fetal lung maturity testing.

Hyaline membrane disease (HMD) is a disorder primarily affecting premature infants and is a significant cause of morbidity and mortality in this population. The disorder is characterized by widespread atelectasis and an inability of the neonate to expand his or her lungs. Secondary hemor rhage, edema and desquamation of alveolar lining cells then occur which further compromise respira tory func...

Estimation of Grape Maturity Based on Neural Networks

The Phenolic Maturity of the grape is one of the most important parameters to determine the optimal time for harvest. In this paper an innovative methodology to estimate grape maturity is proposed. In particular, the method is based on pattern recognition techniques to analyze seed images and to classify them into immature, mature, and overmature states by means of a supervised learning neural ...

The Evolution of Testing Maturity

Changes in Grape Maturity Induced by Spraying Ethanol

Three different ethanol solutions were sprayed onto Cabernet Sauvignon (Vitis vinifera L.) clusters during the ripening period: 2.5, 5 and 10% by volume in water. Controls were sprayed with water alone. Three different times of spraying were also tested: 8, 10 and 13 weeks post-flowering. One of the observed changes was a lower titratable acidity in grape samples at harvest, when the clusters w...